Dust-collector and like apparatus.



PATENIT'ED MAR. 27,1906.

A. o. LYNCH.V

DUST'GOLLEGTORA'ND LIKE APPARATUS.

APPLICATION FILED SEPT. 17,-1904.

2 snpBTs-sHBET 1.

LLL 815,967.

y XA. C. LYNCH. DUST COLLECTOR AND L-IKL APPARATUS.

' APPLICATION HLLD CEPT. 17. 1904.'

PATL'NTLD MAR. 27, 1906.

. 2 SHEETS-SHEET 2.

, UNITED STATES ARTHUR LYNCH. or inCi-inoND i-n'Lri- NE LING, BLOWER. a PIPE MANUPA 1 CONNECTICUT, a` CORPORATION OF CONNECTICUT.

.DUST-COLLECTOR. AND LIKE'APPA'RATUISQI 1 Be it known that I, ARTHUR C. LYNCH, a ci'tizenof the United States, residing at Richmond Hill, county. of Queens, State of N ew 5 York, (Whose ost-office address is the same,)

have invente cer/tain new and useful: 1m*

yprovements in Dust-Collectors and Like Ap paratus, of whiehthe following is a full, true, and concise specification. r

1o A,This'invention relates to improvements in apparatus for collecting dust and othersolid articles fromt air and separating the' iin'er om the c oarser o f such material; and to this end the invention embodies apparatus of eration, as will be presently described, and more particularly pointed out `in the accompanying claims, 1 11 l r Referringto' the drawings,1l*`igure l is a side elevation with parts broken away, and -Figl 2 isa plan view of a simple-form ol apparatus of this. invention with top removed. Fig. 3 isa vertical section-with parts in elevation of' a develo l Fig. 4 is a planvvievv.tlwreof with parts broken away. 1 f q The apparatusk consists Aof a chamber formed bya casing l withatop 2 and an in.- v lclined floor or ybottom, provided with a discharge-opening 4. I The chamber may be of an convenient shape, but is preferably circullar ine'rOss-seetion, and the inclination of thebottom 3 is sufficient to cause solid math i ter to slide downwardly thereon and out Ol" posed a curvedorspiral pipe or passageway 5, entering'the chaniber at the point marked 6 and leaving it the vpoint marked 7. 'llie pipelmay'be of anysuitable construction and as herein. illustrated' is1 1in cross xsectir'ni.

perforated, vbeing conveniently spaced a suitablev is'- tance from the side-wall of the easi'inr forper? 5o 'mitting solid, matterr o r-slftmgs rom the screen tolpass downwardly onto the inclined'l bottom 3.1 .1

`ln the operation oi" the device air laden Specieationiof .'-Letters` lPattent. appiicaaonmea september 17.11994. swarm. 224,793;

novel arrangement of parts and mode ofopment of the invention, and

the,dieellelirge'y Within the. Chamber dis? rectangular or square." 1'l`he curvature may'` be,"l formed by anydesired number'oi' spiral con`- Ipreferably and ior the'v pas-'i Patented March 27,1906.'

with particles of solid matter is forced ini' inlet-opening 6 through the curvedfivni. way and out through oulet 7. y(lenti force due to the. curvature ofthe pa. way acts uponthe solid particles `anrlI d them against the outer side wall, and: particles as are small enough to pas thro the perforations in the screen are dr n through the saine, falling 4into,thefoilter receiving-chamber. The larger partieleslwliich cannot pass through the screenv are' jarried on out of the apparatus to be depositedelseo5 where or subsequently reassorttal-in'a similar manner or separated from the air-rurreiit. In the case OlA air which is laden with ,the rel"- use of wood-"working machinery --sucll .als shavings, chips, sawdust,f&c=-and for wl eli this apparatus is more particularlydr l and is especially serviceable the mesh 1' die screen is ofsueh grade ol coarseness astoperli v mitV only the sawdust to pass therethro'i IIi. and this material `falling into the receiijin l vchamber lin'ds exit vthrough the .normallyA lopen discharge-opening 4 above described.' The area of'- this opening is predeterlnined `,with respect to the-,pressure ol" the airand also with respect to the 'condition ol",ytlrl'eniafl terial, so that the llow o'l air through the' screen will be `sullicient only` to facilitate the; passage therethrough volthe, small` particles1 and Willlnot seriously impair 'the velociivwol' the'air and sllavingsat the mitlet, ',v'llllei o )ching 4 mayn-il' (Ilesired,'beimuleadiusir 1 able, so'as to be capable of regulation in1con-,l formity with dill'erentconditions. Alsothe space between the outer wall oll the passage-1 way and 1the (raising-Wall 1 may be predeter mined with the same eil'ect. 1 As herein illusj,. trated, the passage-way 5 makes aeompletc convolution Within the chamber, but ren-x .tril'ugal 'action and,'selntratirm ol' particles, as jabove described, vi ill obviously take place il formed lwith less `orwith several cmlvolu-4 tions.. lThe pipe may be supported inaan'y `convenient manner within thechamber, and i a convenient'inethod is` by means ol' the plates 0r partitions 8, located between the pipe andv 'the top 2.0iv the easing. 1 lhesc partitions may be fastened vboth to the top and vtothe pipe, serving the 4dou-ble function oi' supporting thelatter and .also prevent' ag accumula-v tion of dust on top oi the same In Figs. l3 and 4 isfslliowna de\1'el pment.- of

IOO

y to this form of the invention anumber ofreposit.

ceiving-chambers are provided, eachinter- -sected by a portion of the 'curved passage- Way 5, and the outer peripheral wall of the said passage-way is provided with screens of increasing coarseness for the successive receiving-chambers. The chambers may obviously be formed in separate casings, but for convenience and compactness are .provided within a single vcasing 1, similar in shape to the casing of the foregoing figures. A vertical partition 12 divides the interior of this casing into two chambers, and the outer peripheral wall of the passage-way of the first chamber is provided with a screen 10 of comparatively fine mesh, and the outer peripheral Wall of the passage-way of the second chamber is provided with a screen 11 of comparatively coarser mesh, While each chamber has discharge openings, respectively designated 13 and 14. These openings are restrictedA in the same manner as mentioned above in connection with the opening 4, so that onlv a proper amount of air is permitted to through the screens 10 and 11.

air laden with solid particles of enters the inlet, the finer particles passing through screen 10 and out of the opening 13, the particles of .larger size passing through the In operation var1ous sizes screen 11 and out of opening 14, while the still larger particles which can pass through neither of the screens are carried on through the outlet to be deposited at any. desired place. It will be. understood, of course, that any number of partitions and screens of graded coarseness may be provided.

The special utilit-y and also novelty ,of the present device consists' in the fact that the apparatus may be interposed at anyconvenient point in the path of the current of dustladen air to separate therefrom the "lin'er particles, such as the sawdust, while the coarser chips and shavinfrs are carried on with p ractically undiminis ied velocity outside ofthe casing to be deposited elsewhere, most desirably in the fire-box ol' the sllavings-furnace of the I nill, where they are utilized as fuel for the produ'd't'ion of power. -.'.I`l1is effect is duc to the fact that pipe 5 terior of thechamber perforations and that the dust discharge. opening is restricted as to area. sawdust is less desirable as a fuel and is more save througl1 the tine serviceable andw'aluable for other purposes,

By'the present invention it is' delivered in ,a constant stream, and the air-pressure. with-in the casingmay be sufficient to permit of its being carried a considerable distance for de- In systems employin apparatus as above described it frequently becomes necessary or desirable to stop the operation of a single apparatus without interrupting the flow of air,

flOtV' is isolated from the in-v t The (me position it is inclined to the flow of air, as in` dicated in the drawings.

In all of the above formsit is to be understood that the structural formation of the casing, passage-way, and other parts are matters which can be changed to any extent according to the option and facilities of the manufacturer, the representations in the drawings being merely simple forms and not intended as working drawings, and it will be observed from the following claims that various modifications in the arrangement of the'several partis of the invention may nc effected within the spirit and scope of this invention. y I

Having described my invention, what I claim, and de'sire to secure by United States Letters Patent, is`

1. A dust-separator comprising a casing to receive the finer particles, a pipe passim`r through said easing and formed with a spira convo ution therein, the said pipe having its outer curved wall perforated but being otherwise isolated from the interior of said casin whereby the finer particles are sifted throng 1 said perforated wall and the coarser particles are carried on through the. pipe out of the separator, in combination with a receptacle for said finer particles providedwith a restricted outlet.

.2. A dust-separator" a pipe passing through i with a convolution therein and having its outer ouryed wall perforated but being otherwisg isolated from the interior of the casing, in combination 'with partitions supporting said pipe from the top of the casing und preveliting accumulation of dust on said pipe,

A dust-separator comprising a casing, a pipe passing through said casing, formed with a convolution therein and having its outer curved wall formed by perforated walls of successively larger-sized anertures but being otherwise isolated from the interior of thc casing, in combination with a verticalpartition dividinfy said interior into compartments to receive differentgrades of siftings from said perforated walls, and restricted outlets for said siftings formedl in each chamber.

4. A dust-separator comprising 'a casin a p ipe passing therethrough and formed .wit 1 a complete spiral convolution therehfwhcreby the inlet and outlet of said pipe are on the comprising a 4casing,

IOC

same Side of the caing and a perforated name'Lto the speeioaton in the presene of Aouter curved Wall forszud pipe, in oombinatwo subscribing Witnesses. tion with a by-pass directly from the inlet to the outlet whereby the dust-laden air may be o ARTHURYG'" LYNCH' 5 prevented from passing through Said convo- 'Witnessesz u't'on of the pipe. v G. A. TAYLOR.

In testimony Whereof/ I-have signed `my A 'A Gr. KIMBALL 

